Microwave oven



FIG. 1 is a front, right perspective view of a microwave oven according to our new design.

FIG. 2 is a front, left perspective thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a front elevational view thereof.

FIG. 5 is a right side elevational elevational view thereof.

FIG. 6 is a rear elevational view thereof.

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a microwave oven, as shown and described. 